Networking

Architecture illustration of a Minecraft server on Oracle Cloud Infrastructure with Podman

July 9, 2026 Martin Schmitter

Minecraft Server on OCI Free Tier with Rootless Podman

My ten-year-old son wanted a Minecraft server for playing online with friends. I wanted something small, controlled, allowlisted, and useful as a real-world excuse to run rootless Podman with systemd on an Oracle OCI Free Tier ARM instance.

Featured image alt text: Isometric network diagram showing a cloud server relaying IPv4 and IPv6 traffic to a home router, Raspberry Pi and VPN endpoint.

June 12, 2026 Martin Schmitter

IPv4-to-IPv6 Relay for Home Services Behind CGNAT

My home network has public IPv6 but no public IPv4 because of CGNAT. This article describes how I use a small Oracle Cloud Free Tier Ubuntu VM, systemd and socat to relay public IPv4 SSH and WireGuard traffic into IPv6-reachable home systems.

Illustration of an OpenWrt home router accessing HAMNET through an L2TP tunnel

December 3, 2024 Martin Schmitter

OpenWrt: Accessing HAMNET over L2TP

Anleitung zur Einrichtung eines L2TP-Zugangs ins HAMNET auf einem OpenWrt-Router, inklusive Firewall, Routing, DNSMASQ und Troubleshooting.

DOAG 2024 speaker banner for a session about connecting a home office with Oracle Cloud

November 29, 2024 Martin Schmitter

Connect Your Home Office to Oracle Cloud – DOAG 2024

On Tuesday, November 19, 2024, I had the opportunity to speak about Oracle Cloud. Have you ever wondered how to

Illustration of a virtual firewall appliance protecting public and private cloud network segments on Oracle Cloud Infrastructure.

June 12, 2024 Martin Schmitter

Install OPNsense® on Oracle Cloud Infrastructure (OCI)

Easily install OPNsense® on Oracle Cloud Infrastructure (OCI) to secure your cloud environment with a community-driven firewall solution.

Generic indoor Wi-Fi access point on a network workbench during an OpenWrt firmware installation process.

April 21, 2023 Martin Schmitter

Install OpenWrt on TP-Link EAP245 v1

How-to install OpenWrt on TP-Link EAP245 v1

Illustration of OSPF route exchange between a cloud router and a home router over a secure WireGuard IPv6 tunnel.

May 1, 2022 Martin Schmitter

WireGuard VPN over IPv6 with OSPF on OCI – Part IV

This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part IV is focused on routing and OSPF.

WireGuard home router setup over IPv6 with OSPF

February 27, 2022 Martin Schmitter

WireGuard VPN over IPv6 with OSPF on OCI – Part III

This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part III is focused on the WireGuard setup and configuration of the home router. In my case it’s an EdgeRouter™-X with version 2.0.9.

Router configured for a WireGuard VPN over IPv6 with OSPF

February 21, 2022 Martin Schmitter

WireGuard VPN over IPv6 with OSPF on OCI – Part II

This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part II is focused on WireGuard setup and configuration in the cloud.

Illustration of a tablet device using a local DNS resolver while an external public DNS route is blocked by a router blackhole route.

February 9, 2022 Martin Schmitter

How to remove the Google DNS server entry from a Kindle?

How to remove the Google DNS server from my Kindle? Configuring my Kindle network configuration, I observed something spooky. Despite using DHCP and my own network services, there appeared the Google DNS server address 8.8.8.8 in the network configuration, always.

WireGuard VPN over IPv6 with OSPF on Oracle Cloud Free Tier - Part I: OCI Preparation

February 1, 2022 Martin Schmitter

Category: Networking